CN109324349A - Subarea-scanning safety check instrument system and its scan method based on millimeter wave - Google Patents
Subarea-scanning safety check instrument system and its scan method based on millimeter wave Download PDFInfo
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- CN109324349A CN109324349A CN201811251598.6A CN201811251598A CN109324349A CN 109324349 A CN109324349 A CN 109324349A CN 201811251598 A CN201811251598 A CN 201811251598A CN 109324349 A CN109324349 A CN 109324349A
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- Prior art keywords
- scanning
- millimeter wave
- scanning means
- safety check
- millimeter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/005—Prospecting or detecting by optical means operating with millimetre waves, e.g. measuring the black losey radiation
Abstract
This application discloses a kind of subarea-scanning safety check instrument system and its scan method based on millimeter wave, the system is for being scanned the checked object of default scanning area, default scanning area includes at least two scanning areas, the safety check instrument system includes image generation unit and at least two millimeter wave scanning means, is corresponded respectively at least two scanning area；Millimeter wave scanning means is for being within a preset period of time scanned to obtain scan data the part of checked object scanning area corresponding to millimeter wave scanning means；Image generation unit, the scan data for receiving at least two millimeter wave scanning means are handled and are imaged to generate the image of checked object.By the above-mentioned means, the application carries out subregion scanning to checked object in the same preset time period by providing at least two millimeter wave scanning means, to accelerate the scanning speed of entire safety check instrument.
Description
Technical field
This application involves safety check instrument technical fields, more particularly to a kind of subarea-scanning safety check instrument system based on millimeter wave
And its scan method.
Background technique
In recent years, safety problem increasingly obtains the concern of the people of the world, also mentions to the reliability and intelligence of safe examination system
Higher requirement is gone out.
Traditional metal detector can only detect short distance small range target, and low efficiency has been far from satisfying
The demand of safety check.Although the various rays such as X-ray have very strong penetration power, radiation injury can be caused to tested human body, even if
There is currently the X-ray machines of low radiation dose, but it is still not easy to be accepted by the public.Infrared ray be by body surface temperature at
Picture, can not blur-free imaging in the case where there is fabric to block.And millimeter wave imaging system not only can detecte out and be hidden in fabric
Under metal object, can also detect that plastics pistol, the dangerous material such as explosive, the information of acquisition is more detailed, accurate, Ke Yi great
The earth reduces false alarm rate.Therefore, mm-wave imaging technology has obtained more being widely applied in terms of personnel in recent years.
Mm-wave imaging technology will use millimetre-wave radar.Millimetre-wave radar refers to radar emission signal frequency in millimeter
Wave frequency section, the frequency of millimeter wave are 30GHz to 300GHz (wavelength is from 1mm to 10mm), in practical engineering applications, often milli
The low end frequency of metric wave drops to 26GHz.In electromagnetic spectrum, the position of millimeter-wave frequency between microwave and it is infrared between.With it is micro-
Wave is compared, and the typical feature of millimeter wave is that wavelength is short, bandwidth (utilizing space with very wide) and biography in an atmosphere
Broadcast characteristic.Compared with infrared, millimeter wave has the ability of all weather operations and can be used for flue dust, under the adverse circumstances such as cloud and mist.
In the case where microwave frequency band is more and more crowded, the advantages of millimeter wave takes into account microwave, and be also equipped with low-frequency range microwave and do not have
Standby some advantages.
In the prior art, safety check instrument device is to object to be measured, as the scanning of human body be all carried out by millimeter wave array from
The scanning in head to foot or the direction from foot to head, the frequency reason of clarity and millimeter wave based on imaging,
The frequency of scanning is limited, it is difficult to meet the requirement to safety check speed in the market.
Summary of the invention
The application provides a kind of subarea-scanning safety check instrument system and its scan method based on millimeter wave.It is able to solve existing
The slower problem of the scanning speed as caused by frequency limit in technology.
The technical solution that the application uses is: a kind of subarea-scanning safety check instrument system based on millimeter wave, the system
System is scanned for the checked object to default scanning area, and the default scanning area includes at least two scanning areas,
Wherein, the safety check instrument system includes: at least two millimeter wave scanning means, respectively at least two scanning area one
One is corresponding；The millimeter wave scanning means is used within a preset period of time to the checked object in the millimeter wave scanning means
The part of corresponding scanning area is scanned to obtain scan data；Image generation unit receives at least two milli
The scan data of metric wave scanning means is handled and is imaged to generate the image of the checked object.
In order to solve the above technical problems, another technical solution that the application uses is: providing a kind of based on millimeter wave
The scan method of subarea-scanning safety check instrument system, the system is for being scanned the checked object of default scanning area, institute
Stating default scanning area includes at least two scanning areas, and the system comprises image generation units and at least two millimeter waves to sweep
Imaging apparatus is corresponded at least two scanning area respectively；It is filled the described method includes: being scanned using the millimeter wave
It sets within a preset period of time, the part of checked object scanning area corresponding to the millimeter wave scanning means is carried out
Scanning, to obtain scan data；The scan data of at least two millimeter waves scanning means is received using image generation unit
It is handled and is imaged to generate the image of the checked object.
The beneficial effect of the application is: being different from the prior art, application is by providing at least two millimeter wave scanning means
Subregion scanning is carried out to checked object in the same preset time period, to accelerate the scanning speed of entire safety check instrument.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the subarea-scanning safety check instrument system provided by the present application based on millimeter wave；
Fig. 2 is the structural schematic diagram of the millimeter wave scanning means in safety check instrument system shown in Fig. 1；
Fig. 3 is a kind of aerial array mounting structure schematic diagram for door case type safety check instrument that one embodiment of the application provides；
Fig. 4 is a kind of application scenarios schematic diagram of safety check instrument system provided by the present application；
Fig. 5 is that the first pass of the scan method of the subarea-scanning safety check instrument system provided by the present application based on millimeter wave shows
It is intended to.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiment of the application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present application
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
Referring to Fig. 1, the structure that Fig. 1 is a kind of subarea-scanning safety check instrument system based on millimeter wave provided by the present application is shown
It is intended to, which includes at least two millimeter wave scanning means 100 and image generation unit 200, and millimeter wave is swept
Imaging apparatus 100 is specifically as follows two, three, four or multiple, preset scanning area also with millimeter wave scanning means 100
One-to-one correspondence specifically may be two, three, four or multiple.
Its millimeter wave scanning means 100 is for right in the millimeter wave scanning means to checked object within a preset period of time
The part for the scanning area answered is scanned to obtain scan data, i.e., for the checked object in default scanning area,
It is also divided into multistage, all there is a part in multiple scanning areas, and millimeter wave scanning means 100 is used to corresponding sweep its
That a part in region is retouched to be scanned to obtain the scan data of this part.Then pass through image generation unit 200
The scan data for receiving its all millimeter wave scanning means 100 is handled and is imaged to generate the image of checked object.
Referring to Fig. 2, Fig. 2 is a kind of structural schematic diagram of millimeter wave detection device provided by the present application；Specifically, millimeter
Wave scanning means 100 includes millimeter wave transceiving module 110, the aerial array 120 connecting with millimeter wave transceiving module 110 and use
In the switch arrays 130 of control aerial array 120
Wherein, millimeter wave transceiving module 110 is sent to checked object in the millimeter wave of the part of scanning area for generating
Emit signal and receive and handle echo-signal, wherein echo-signal carries checked object with respect to millimeter wave transmitting signal
Information data.
Wherein, aerial array 120 includes transmitting antenna array 121 and receiving antenna array 122, the transmitting antenna array
121 include multiple transmitting antennas 1211, as shown in figure 3, being specifically as follows door case type safety check in specific safety check instrument system
Instrument is provided with aerial array 120 on doorframe, multiple transmitting antennas 1211 is provided on doorframe corresponding to scanning area,
Receiving antenna array 122 includes multiple receiving antennas 1221 being arranged on doorframe, each transmitting antenna 1211 and each receiving antenna
1221 correspond, and in order to reach better detection effect, are also possible to the corresponding two reception days of a transmitting antenna 1211
Line 1221, wherein transmitting antenna 1211 is used for receives echo-signal for sending millimeter wave transmitting signal, receiving antenna 1221.
Wherein, switch arrays 130 connect millimeter wave transceiving module 110 and aerial array 120, and wherein switch arrays 130 wrap
The emission switch array 132 and reception switch arrays for including switch control unit 131 and being electrically connected with switch control unit 131
133, in a particular embodiment, switch control unit can be FPGA (Field-Programmable Gate Array), i.e.,
Field programmable gate array, emission switch array 132 are made of multiple emission switch 1321, receive switch arrays 133 by multiple
Switch 1331 is received to form.
Switch control unit 131 can be according to the transmitting antenna 1211 and multiple receiving antennas of the multiple millimeter waves of timing control
1221 carry out the transmitting and reception of multiple millimeter-wave signal, to complete adopting to the echo-signal of the front-back of checked object
Collection.For example, can be realized by single pole multiple throw to the control of multiple transmitting antennas 1211, naturally it is also possible to use ability
Any timing control known to domain.
In a particular embodiment, millimeter wave transceiving module 110 can input millimeter-wave signal to four throw switch of hilted broadsword,
And this four throw switch of hilted broadsword can input millimeter-wave signals to four four throw switches of hilted broadsword, and this four four throw switches of hilted broadsword
Millimeter-wave signal can be inputted to four throw switch of hilted broadsword again, can thus have a transmitting antenna 1211, to form transmitting
Aerial array 121, for the millimeter-wave signal of transmitting to be emitted at the different location of human body.
As described above, multiple transmitting antennas 1211 and non-simultaneous operation, but for example by three layers of four throw switch of hilted broadsword come
Control, emits them one by one, naturally it is also possible to be thrown using hilted broadsword five or other single pole multiple throws carry out mutually
Combination carries out the quantity control of transmitting antenna 1211 and receiving antenna 1221 to realize.Its switch control unit 131 can pass through
It is worked transmitting antenna 1211 and receiving antenna 1221 to realize the gating of these switches.
As shown in figure 4, in one embodiment, by taking two millimeter wave scanning means as an example, respectively the first millimeter wave
Scanning means 100a and the second millimeter wave scanning means 100b.Its default scanning area is respectively that the first scanning area is swept with second
Retouch region, wherein the first millimeter wave scanning means 100a is scanned the first scanning area for being responsible for, the second millimeter wave
Scanning means 100b is for being scanned the second scanning area.
In a specific implementation scene, when safety check instrument system is human body safety check instrument, checked object is behaved, when people stands
In default scanning area, default scanning area is divided into connected the first scanning area and the second scanning area of upper lower leaf.
The upper part of the body of characteristic based on body scans, human body is higher than the complexity of the lower part of the body, better in order to reach
Imaging effect is preferably segmented with the stomach height (adult) of human body, i.e., for default scanning area, such as
It can be 0.9 meter or 1.2 meters or so of position from bottom to vertical height be the second scanning area, other positions are then first to sweep
Retouch region.
Its first millimeter wave scanning means 100a is also mounted at and position corresponding to the first scanning area, the second millimeter wave
Scanning means 100b be mounted on position corresponding to the second scanning area, specifically, being the first millimeter wave scanning means 100a
Aerial array be mounted on and position corresponding to the first scanning area, the aerial array peace of the second millimeter wave scanning means 100b
Mounted in the corresponding position of the second scanning area, when safety check instrument system is worked, the first millimeter wave scanning means 100a is swept
Checked object (human body) is retouched in the part of the first scanning area to obtain the first scan data, i.e. abdomen above section, second
Millimeter wave scanning means 100b scans checked object (human body) in the part of the second scanning area, i.e. part below abdomen and abdomen
To obtain the second scan data.
Can be identical or on the contrary, for example can be the scanning of the first millimeter wave in the scanning direction of two millimeter wave scanning means
From the beginning device 100a arrives abdomen, the second millimeter wave scanning means 100b is abdomen to foot, is also possible to the scanning of the first millimeter wave
From the beginning device 100a arrives abdomen, the second millimeter wave scanning means 100b is from foot to abdomen.
Further, image generation unit receives the first scan data and is handled and be imaged with the second scan data
To generate the image of checked object (human body).
In a particular embodiment, it can be scattered since millimeter wave is emitted to human body, i.e., scan and fill in the first millimeter wave
The millimeter wave for setting the first transmitting antenna in 100a may be received by the receiving antenna of the second millimeter wave scanning means 100b,
To the interference of scanning signal occur.
Therefore in order to realize that the first millimeter wave scanning means 100a can be same with the second millimeter wave scanning means 100b
A preset time period is scanned, can be by filling the first millimeter wave scanning means 100a and second millimeter wave scanning
The scanning signal set of frequency of 100b is set as difference, i.e. the first millimeter wave of the generation of the first millimeter wave transceiving module emits signal
It is different from the second millimeter wave emission signal frequency of the generation of the second millimeter wave transceiving module, therefore the first millimeter wave scanning means
100a and the second millimeter wave scanning means 100b can carry out work simultaneously, without being affected.
It in another embodiment, can be with the first millimeter wave scanning means 100a and the second millimeter wave scanning means
100b carries out transpostion interval Time share scanning within a preset period of time；In a particular embodiment, since millimeter wave scanning means is that have
One duty cycle, the duty cycle includes working time and interval time, while it is working in, can be swept
It retouches, and in its interval time, really without work, therefore can be preset therebetween by controlling every in the time
The method of timing makes other millimeter wave scanning means work.I.e. in the duty cycle of a millimeter wave scanning means
Interior, multiple millimeter wave scanning means are successively spaced work.
Itself specifically, the first switch control unit in the first millimeter wave scanning means 100a according to the first default timing control
It makes its first switch array to work, the second switch control unit in the second millimeter wave scanning means 100b is pre- according to second
If its second switch array of timing control works, i.e., its timing is spaced, such as the first millimeter wave scanning means
The duty cycle of 100a be 2S, 1S, 3S, 5S ... work when 11S, and due to the speed of millimeter wave be the light velocity,
With the received time be that can consider to complete in a flash in transmitting, i.e. the first millimeter wave scanning means 100a 1S, 3S,
Time point of 5S ... 11S is upper or the transmitting and reception of millimeter wave are carried out in the left and right 0.1S even smaller time, then its 2S,
4S, 6S ... ... 12S, at this time can be with the works of the second default timing in the second millimeter wave scanning means 100b without work
The 12S etc. that is set as 2S, 4S, 6S ... ... exists the second of the second millimeter wave scanning means 100b the default timing setting
On the periodic intervals of first millimeter wave scanning means 100a, thus by offseting one from another real work to realize mutually not shadow
It rings.
In aforesaid way, using the millimeter wave scanning means unavoidable duty cycle itself, then by other millimeter waves
The working sequence of device was arranged in the interval time in the duty cycle, thus realize do not interfere mutually, and in time not into
Row delay, and increase the rate entirely scanned.
When in other embodiments, as using multiple millimeter wave scanning means, the letter of a variety of millimeter waves can also be used
Number frequency, or worked in section at the same time by the way that different timing is arranged to realize.
In a particular embodiment, it is influenced due to switch arrays by one of switch self character, is such as directed to emission switch battle array
Column multiple emission switch for, switch control unit control previous stage emission switch worked and complete work after,
Next stage emission switch opening can not be opened at once to work, open has between work there are time interval twice,
Because different millimeter wave apparatus is independently to work, in this time interval, other millimeter of wave apparatus be can control
Its switch arrays works, to offset one from another the working time, and by using between the time that itself cannot shorten
Every working, the working efficiency of its entire safety check instrument system is greatly accelerated.
Referring to Fig. 5, Fig. 5 is that the application provides a kind of scan method of subarea-scanning safety check instrument system based on millimeter wave
First pass schematic diagram.It is specifically included:
S11, within a preset period of time using the millimeter wave scanning means, to checked object in millimeter wave scanning means institute
The part of corresponding scanning area is scanned, to obtain scan data.
Using millimeter wave scanning means for right in the millimeter wave scanning means to checked object within a preset period of time
The part for the scanning area answered is scanned to obtain scan data, i.e., for the checked object in default scanning area,
It is also divided into multistage, all there is a part in multiple scanning areas, millimeter wave scanning means is used for its corresponding scanning
That a part in region is scanned to obtain the scan data of this part.
S12, using image generation unit receive at least two millimeter wave scanning means scan data carry out processing and at
As the image to generate checked object.
It is handled using the scan data that image generation unit receives its all millimeter wave scanning means, due to tested
There is scan data in each part in scanning area of object, after handling these scan datas, then can be imaged
To generate the image of checked object.
In conclusion the application includes at least two millimeter wave scanning means by providing safety check instrument system, and corresponding
The default scanning area of its safety check instrument system is divided into and carries out one-to-one at least two at least two millimeter wave scanning means
A scanning area, and by setting frequency or the method for working sequence, so that in the same preset time period, at least two
Millimeter wave scanning means can mutually independent work, and be not in signal interference, and after obtaining scan data, pass through figure
As generation unit is handled, to generate the image of checked object, the time of its scanning is substantially reduced, scanning is improved
Efficiency.
The above is only presently filed embodiments, are not intended to limit the scope of the patents of the application, all to utilize the application
Equivalent result made by specification and accompanying drawing content or equivalent process transformation are applied directly or indirectly in other relevant technologies
Field similarly includes in the scope of patent protection of the application.
Claims (10)
1. a kind of subarea-scanning safety check instrument system based on millimeter wave, which is characterized in that the system is used for default scanning area
The checked object in domain is scanned, and the default scanning area includes at least two scanning areas,
Wherein, the safety check instrument system includes:
At least two millimeter wave scanning means are corresponded at least two scanning area respectively；
The millimeter wave scanning means is used within a preset period of time to the checked object in the millimeter wave scanning means institute
The part of corresponding scanning area is scanned to obtain scan data；
Image generation unit, the scan data for receiving at least two millimeter waves scanning means are handled and are imaged to generate
The image of the checked object.
2. safety check instrument system according to claim 1, which is characterized in that at least two millimeter waves scanning means is in institute
It states and carries out while scanning in preset time period；
Wherein, the scanning signal frequency of at least two millimeter waves scanning means is different.
3. safety check instrument system according to claim 1, which is characterized in that at least two millimeter waves scanning means is in institute
It states and carries out timesharing successively interval scan in preset time period；
Wherein, the scanning signal frequency of at least two millimeter waves scanning means is identical.
4. safety check instrument system according to claim 1, which is characterized in that at least two millimeter waves scanning means is in institute
It states and carries out timesharing successively interval scan in preset time period；
Wherein, the scanning signal frequency of at least two millimeter waves scanning means is different.
5. safety check instrument system according to claim 1, which is characterized in that
The millimeter wave scanning means includes millimeter wave transceiving module, the aerial array being connect with the millimeter wave transceiving module with
And the switch arrays for controlling the aerial array.
6. safety check instrument system according to claim 5, which is characterized in that
The millimeter wave transceiving module is sent to the checked object in the millimeter wave of the part of the scanning area for generating
Emit signal and receives and handle echo-signal；
The aerial array includes transmitting antenna array and receiving antenna array, and the transmitting antenna array includes multiple transmitting days
Line, the receiving antenna array include multiple receiving antennas, and each transmitting antenna and each receiving antenna correspond, with
It sends the millimeter wave transmitting signal and receives the echo-signal；
Switch arrays, the switch arrays are electrically connected the millimeter wave transceiving module and the aerial array, the switch arrays
Including switch control unit and the emission switch array being electrically connected with the switch control unit and switch arrays are received, it is described
Emission switch array is made of multiple emission switch, and the reception switch arrays are made of multiple receptions switch；The switch control
Unit processed is switched on-off according to each emission switch of default timing control and each reception.
7. safety check instrument system according to claim 6, which is characterized in that
The scan data includes the millimeter wave transmitting signal and the echo-signal.
8. a kind of scan method of the subarea-scanning safety check instrument system based on millimeter wave, which is characterized in that the system for pair
The checked object of default scanning area is scanned, and the default scanning area includes at least two scanning areas, the system
It is a pair of at least two scanning area one respectively including image generation unit and at least two millimeter wave scanning means
It answers；
The described method includes:
Within a preset period of time using the millimeter wave scanning means, to the checked object in the millimeter wave scanning means institute
The part of corresponding scanning area is scanned, to obtain scan data；
Handled and be imaged using the scan data that image generation unit receives at least two millimeter waves scanning means with
Generate the image of the checked object.
9. scan method according to claim 8, which is characterized in that at least two millimeter waves scanning means is described
It carries out while scanning in preset time period；
Wherein, the scanning signal frequency of at least two millimeter waves scanning means is different.
10. scan method according to claim 8, which is characterized in that at least two millimeter waves scanning means is in institute
It states and carries out timesharing successively interval scan in preset time period；
Wherein, the scanning signal frequency of at least two millimeter waves scanning means is identical or different.
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| CN110515133A (en) * | 2019-08-13 | 2019-11-29 | 博微太赫兹信息科技有限公司 | A kind of quick millimeter wave human body imaging detector gate |
| CN111352170A (en) * | 2020-03-09 | 2020-06-30 | 浙江云特森科技有限公司 | Sectional scanning method |
| CN113009587A (en) * | 2021-02-02 | 2021-06-22 | 深圳市天鼎微波科技有限公司 | Method and device for adjusting rotary disc of millimeter wave human body scanner |
| CN113552647A (en) * | 2021-01-19 | 2021-10-26 | 博微太赫兹信息科技有限公司 | Rapid-scanning planar millimeter wave human body security inspection equipment and method |
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